package lang;

import java.util.HashMap;
import java.util.Map;

public class Integer_ {
    public static void main(String[] args) {
        System.setProperty("int", "15");

        System.out.println(Integer.getInteger("in8", 19));


        long value = 111111111111L;
        System.out.println(value ^ (value >>> 32));


        System.out.println(Integer.toHexString(111));


        //integer long  hash code 的算法不一样

        Integer a = 123456789;
        Long b = 123456789L;

        Map map = new HashMap();

        map.put(b,"aaa");
        System.out.println(map.get(a));

    }
}
